Picking arm for looms



Ndv., 11 .1924.

W. M. WAT-TIE PIGKING ARM FOR .LOOMS Filed m1 1?, 1924 Patented Nov. 11, 1924.

UNITED STATES 1.51am PATENT caries.

WILLIAM M. WATTIE, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM VJORKS, OF WORGESTER, I/IASSAGHUSE'ITS, A CORPORATION OF MASSACHUSETTS.

PICKING ARM FOR LOOMS. i

Application filed April 17, 1924. Serial No. 707,241.

To all whom a may concern:

Be it known that I, WILLIAM M. WVAT- TIE, a citizen of Canada, residing at Worcester, in the county of Vorcester and State of Massachusetts, have invented a new and useful Picking Arm for Looms, of which the following is a specification.

This invention relates to picking motions for looms and more particularly to improvements in the mounting of the picker roll on the arm of such motions.

In the form of picking arm shown in Patent No. 690,000 the picking roll is mounted rotatably on a stud which is supported in the arm at one side of the roll only. As the bottom shaft of the loom rotates the arm and roll move therewith, the latter being brought into periodic contact with the picking shoe at which time the strain on the roll tends to move the same toward the shaft. In such looms it is desirable to adjust the angular position of the roll with respect to the arm so that the picking may be timed as desired.

One object of my present invention is to provide a picking arm so constructed that the picking roll may be supported from both sides thereof in such a way as to permit angular adjustment of the roll with respect to the arm so that the roll will be supported in an angular positions thereof.

It is another object of my invention to provide a picking arm with an offset member overhanging or enclosing a part of the roll and acting to prevent aceidentalremoval of the latter should be mounting thereof work loose.

ith these and other objects in view my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein I have shown two forms of my invention,

Fig. 1 is a front elevation of a picker arm having my invention applied thereto,

Fig. 2 is a side elevation of the arm shown Y in Fig. 1,

Fig. 3 is a view similar to Fig. 2 but showing a modified form of the invention, and

Fig. 1 is a vertical section taken on line 4-4: of Fig. 3. r

Referring to the drawings, it will be seen that I have provided the usual bottom shaft 10 which usually makes one revolution for two picks of t e 100m and has picker arm 11 splined thereon as at 12. The picking arm disclosed in the drawing is of the type commonly found on so-called pick and pick looms and has formed in each end thereof slots 13 which are preferably concentric with the shaft 10. Extending through one of theslots 13 is a stud 1 1 which is provided with a bearing surface 15 and a head 16 which support and retain roll 17 respectively. The bearing portion 15 is somewhat larger than that portion of the stud which extends through the slot 13, having a shoulder 16 in engagement with the picker arm. By means of nuts 19 and 20, respectively, the stud 14: is held rigidly to the picker arm in any adjusted position permitted by the slot 13.

e In order that the angular position of the roll with respect tothe arm may be adjusted, each end of the arm is provided with a pair of adjusting screws 21 and 22, respectively, which pass through the arms and have their inner ends extending into the slot 13 to contact with the stud 14. When it is desired to adjust the angular position of the roll, the nuts 19 and 20 are loosened and the screws 21 and 22 manipulated to move the roll so as to effect earlier or later picking as desired. Thematter thus far described is in common use and forms no part of my present invention.

My improvements relate more particularly to the manner of supporting the side of the picking roll remote from the picking arm and to means for retaining the roll should the stud therefor work loose. As shown in Figs. 1 and'2 I have provided the arm 11 with holes 30 to receive bolts 31 which pass through I suitable openings formed in abearing member 32 and hold it firmly in place on the arm 11'. The lower end of the bearing 32 is offset as at 33 and is provided on the bottom thereof with a surface 34 which is concentric with the slot 13 and is positioned for engagement with the head 16 as shown in Figs. 1 and 2. When the roll is adjusted with respect to the arm, as previously described, the head 16 of the stud will be kept in contact with the surface 3a, the member 32 remaining in fixed position on the arm for all positions of the roll.

The modified form of the invention, indicated in Figs. 3 and 4 has a bearing member 40 provided with a pair of slots ll WlllCll are concentric with the slot 13 and permit angular adjustment of the bearing with respect to the arm 11. The lower part of the member 40 is provided with a closed bearing'eLQ into which fit the heads 16 of the stud is not necessary, as the head may be omitted and the roll retained in position by the lower offset portions of the additional bearing.

It will be observed from the foregoing that I have provided a pic-king arm which may have applied thereto either of. two forms of bearing members to support the outer end of the stud which carries the picking roll, the parts being so arranged as to reinforce the stud in all adjusted positions thereof. Also, it will be noted that the bearings serve to retain the roll in place in the event of a loose stud, and that the stud may be withdrawn from the arm and the roll replaced Without disturbing the setting of the bearing members.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In picking mechanism for looms, a piclc ing arm, a picker roll carried by and angularly adjustable with respect to the arm, and an auxiliary bearing member for the out-er end of the roll to support the latter in all adjusted positions thereof with respect to the roll.

i In picking mechanism for looms, a pickingarm, a stud carried by the arm and projecting laterally therefrom, a picker roll rotatably mounted on the stud, said stud and roll being angularly adjustable with respect to the arm, and an auxiliary bearing for the stud secured to the arm to engage a portion of the stud and support the same in all adjusted positions thereof.

3. An auxiliary support for a picking roll angularly adjustable on a picking arm, said support having a portion to be secured to the arm and having also a bearing portion spaced from the arm and operative in all adjusted positions of the roll to support that portion of the latter farthest from the arm.

4:. An auxiliary support for a picking roll rotatably mounted on a stud angularly adjustable on a picking arm, said support having a portion by which the same may be secured to. the arm and having also a bearing portion spaced from the arm and operative in all adjusted positions of the stud to engage and support that portion of the latter adjacent the part of the roll remote from the arm.

5. In picking mechanism for looms, a P

"from said roll and having a portion to enclose part of the roll, said portion being spaced from the arm and supporting that end of the roll remote from the arm.

7. In picking mechanism for looms, a pick r arm, a picker roll at one side of the arm, means for mounting the roll carried by and adjustable angularly with respect to the arm. and an auxiliary bearing member -for said means removably secured to the arm and having a portion extending over a part of the roll and formed with a bearing spaced from the arm and supporting said means on the side of the roll remote from the arm, said auxiliary bearing supporting the means and permitting removal of the means and roll in all adjusted position of said means.

In testimony whereof I have hereunto aflixed my signature,

WILLIAM M. WATTIE.

the roll secured to and projecting laterally 

